The greatness of taking oath in the name of Allah while lying

 The greatness of taking oath in the name of Allah while lying 

Alhamdulillah,

Allah says,

An-Nisa' 4:148

۞لَّا يُحِبُّ ٱللَّهُ ٱلۡجَهۡرَ بِٱلسُّوٓءِ مِنَ ٱلۡقَوۡلِ إِلَّا مَن ظُلِمَۚ وَكَانَ ٱللَّهُ سَمِيعًا عَلِيمًا

Allāh does not like the public mention of evil except by one who has been wronged. And ever is Allāh Hearing and Knowing.

Mentioning the name of Allah anyhow while lying is a great sin except for the one who is wronged of his right.

As the expiation is to free a slave or fast three days or give out charity by sharing to ten indigent peoples.

Allah says,

Al-Ma'idah 5:89

لَا يُؤَاخِذُكُمُ ٱللَّهُ بِٱللَّغۡوِ فِيٓ أَيۡمَٰنِكُمۡ وَلَٰكِن يُؤَاخِذُكُم بِمَا عَقَّدتُّمُ ٱلۡأَيۡمَٰنَۖ فَكَفَّٰرَتُهُۥٓ إِطۡعَامُ عَشَرَةِ مَسَٰكِينَ مِنۡ أَوۡسَطِ مَا تُطۡعِمُونَ أَهۡلِيكُمۡ أَوۡ كِسۡوَتُهُمۡ أَوۡ تَحۡرِيرُ رَقَبَةࣲۖ فَمَن لَّمۡ يَجِدۡ فَصِيَامُ ثَلَٰثَةِ أَيَّامࣲۚ ذَٰلِكَ كَفَّٰرَةُ أَيۡمَٰنِكُمۡ إِذَا حَلَفۡتُمۡۚ وَٱحۡفَظُوٓاْ أَيۡمَٰنَكُمۡۚ كَذَٰلِكَ يُبَيِّنُ ٱللَّهُ لَكُمۡ ءَايَٰتِهِۦ لَعَلَّكُمۡ تَشۡكُرُونَ

Allāh will not impose blame upon you for what is meaningless[1] in your oaths, but He will impose blame upon you for [breaking] what you intended of oaths. So its expiation[2] is the feeding of ten needy people from the average of that which you feed your [own] families or clothing them or the freeing of a slave. But whoever cannot find [or afford it] - then a fast of three days [is required]. That is the expiation for oaths when you have sworn. But guard your oaths.[3] Thus does Allāh make clear to you His verses [i.e., revealed law] that you may be grateful.

when Allah's messenger intends to some thing and swears of it and see something better than that, will ast for three days and do what is better.

'Adi b. Hatim reported Allah's Messenger (ﷺ) as saying:

He who took an oath, but he found something else better than that, should do that which is better and break his oath.