Never lie in swearing (making an oath). Making an oath unintentionally is not punishable.
If someone swears deliberately to do something then he violates his oath, he must expiate, unless the oath was to do an evil act or to ignore a good one. There is also an exception for the one who said "In Sha’a Allah" (if Allah wills), depending on his intention.
The expiation of the oath is to feed or clothe ten indigent people, manumit a slave, or fast three days, according to this order.
A vow is permissible for Allah Only. The one who vows must fulfill the vow whether in absolute or conditional terms, unless he vowed concerning a sinful act or vowed about something he does not own.
Proper manners towards the Glorious Qur’an: Know the value of the Qur’an as being the Word and Law of Allah sent for the good of His bondmen in this worldly life and their success in the Hereafter.
This means: “So keep your duty to Allah and fear Him as much as you can; listen and obey; and spend in charity, that is better for yourselves. And whosoever is saved from his own covetousness, then they are the successful ones.” (At-Taghabun: 16)
This means: “While another party was thinking about themselves (as how to save their own selves, ignoring the others and the Prophet SAW) and thought wrongly of Allah - the thought of ignorance.” (Al-`Imran: 154)
This means: “Say: "O My slaves who have transgressed against themselves (by committing evil deeds and sins)! Despair not of the Mercy of Allah, verily Allah forgives all sins. Truly, He is Oft-Forgiving, Most Merciful.''” (Az-Zumar: 53)
This means: “And My Mercy embraces all things. That (Mercy) I shall ordain for those who are the Muttaqun (pious) and give Zakah; and those who believe in Our Ayat (proofs, evidences, verses, lessons, signs and revelations, etc.).” (Al-A`raf: 156)
This means: “Allah will not punish you for what is unintentional in your oaths, but He will punish you for your deliberate oaths; for its expiation (a deliberate oath) feed ten Masakin (poor persons), on a scale of the average of that with which you feed your own families; or clothe them; or manumit a slave. But whosoever cannot afford (that), then he should fast for three days.
That is the expiation for the oaths when you have sworn. And protect your oaths (i.e. do not swear much). Thus Allah make clear to you His Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) that you may be grateful.” (Al-Ma’idah: 89)
This means: “And make not Allah's (Name) an excuse in your oaths against your doing good and acting piously, and making peace among mankind. And Allah is All-Hearer, All- Knower (i.e. do not swear much and if you have sworn against doing something good then give an expiation for the oath and do good).
Allah will not call you to account for that which is unintentional in your oaths, but He will call you to account for that which your hearts have earned. And Allah is Oft- Forgiving, Most-Forbearing.” (Al-Baqarah: 224 - 225)
The Messenger of Allah (SAWS) said: “Whoever finds it necessary to take an oath should either take it in the Name of Allah or keep silent.” (Reported by al-Bukhariyy and Muslim)
The Messenger of Allah (SAWS) said: “And swear by Allah Only, and swear by Allah Only when you are speaking the truth.” (Reported by Abu-Dawud and an-Nasa’i)
The Messenger of Allah (SAWS) said: “He who swears by anyone but Allah is a polytheist.” (Reported by at-Tirmidhiyy)
The Messenger of Allah (SAWS) said: “He who swears an oath in which he tells a lie to take the property of a Muslim by unfair means will meet Allah while He is angry with him.” (Reported by al-Bukhariyy and Muslim)
Vows: Allah says: ﴿ يُوفُونَ بِالنَّذْرِ وَيَخَافُونَ يَوْمًا كَانَ شَرُّهُ مُسْتَطِيراً ﴾ [ الإنسان : 7]
This means: “They (are those who) fulfill (their) vows, and they fear a Day whose evil will be wide-spreading.” (Al-Insan: 7)
This means: “And fulfill the Covenant of Allah when you have covenanted, and break not the oaths after you have confirmed them, and indeed you have appointed Allah your surety. Verily! Allah knows what you do.” (An-Nahl: 91)
The Messenger of Allah (SAWS) said: “Whoever vows that he will obey Allah should obey Him. But he who vows that he will disobey Allah should not do so.” (Reported by al-Bukhariyy)
The Prophet (SAWS) said: “No vow must be taken to do an act of disobedience, and the expiation for it is the same as for an oath.” (Reported by at-Tirmidhiyy)
The Prophet (SAWS) said: “The expiation of the (breach of) a vow is the same as that of the (breach of an oath).” (Reported by Muslim)
Ibn-`Umar (SAWS) narrated: “The Prophet forbade vowing and said: It (vowing) does not prevent anything, but it makes a miser spend his property.” (Reported by al-Bukhariyy and Muslim)
Proper manners towards the Glorious Qur’an: The Messenger of Allah (SAWS) said: “Recite the Holy Qur'an, because on the Day of Resurrection it will come as an intercessor for its reciters.” (Reported by Muslim)
The Messenger of Allah (SAWS) said: “The best of you is that who learns the Holy Qur'an and teaches it.” (Reported by al-Bukhariyy)
The Prophet (SAWS) said, "The people of the Qur'an are Allah's people and His special servants." (Reported by Ibn Majah)
The Prophet (SAWS) said: “He who recites the Qur'an in a period less than three days does not understand it.” (Reported by Ahmad)
The Prophet (SAWS) said: “Beautify the Qur'an with your voices.” (Reported by an-Nasa`iyy and Abu-Dawud)
The Prophet (SAWS) said: “He who does not chant the Qur'an is not one of us.” (Reported by al-Bukhariyy)
The Messenger of Allah (SAWS) said: “Allah does not listen (so attentively) to anything as He listens to (the recitation of the Holy Qur'an) by the Prophet who had a melodious and audible voice, who chanted the Qur'an.” (Reported by al-Bukhariyy and Muslim)
The Prophet (SAWS) said: “One who recites the Qur'an in a loud voice is like one who gives charity openly.” (Reported by at-Tirmidhiyy)
Proper manners towards the Prophet (SAWS): Allah says: ﴿ لَقَدْ كَانَ لَكُمْ فِي رَسُولِ اللهِ أُسْوَةٌ حَسَنَةٌ لِّمَن كَانَ يَرْجُو اللهَ وَالْيَوْمَ الآخِرَ ﴾ [ الأحزاب : 21]
This means: “Indeed in the Messenger of Allah (Muhammad SAWS) you have a good example to follow for him who hopes in (the Meeting with) Allah and the Last Day.” (Al-Ahzab: 21)
Allah also says: ﴿ وَمَا آتَاكُمُ الرَّسُولُ فَخُذُوهُ وَمَا نَهَاكُمْ عَنْهُ فَانتَهُوا ﴾ [ الحشر : 7]
This means: “And whatsoever the Messenger (Muhammad SAWS) gives you, take it, and whatsoever he forbids you, abstain (from it).” (Al-Hashr: 7)
This means: “Say (O Muhammad SAWS to mankind): If you (really) love Allah then follow me, Allah will love you and forgive you of your sins. And Allah is Oft-Forgiving, Most Merciful.” (Al-`Imran: 31)
This means: “Verily! Those who lower their voices in the presence of Allah's Messenger (SAWS), they are the ones whose hearts Allah has tested for piety. For them is forgiveness and a great reward.” (Al-Hujurat: 3)