صحيح البخاري
Sahih Bukhari
كتاب الأيمان والنذور
The Book of Oaths and Vows
باب قول الله تعالى: {إن الذين يشترون بعهد الله وأيمانهم ثمنا قليلا أولئك لا خلاق لهم فى الآخرة ولا يكلمهم الله ولا ينظر إليهم يوم القيامة ولا يزكيهم ولهم عذاب أليم} :
(17) Chapter. The Statement of Allah:“Verily, those who purchase a small gain at the cost of Allah’s Covenant and their oaths..." (V.3:77) And also the Statement of Allah: "And purchase not a small gain at the cost of Allah’s Covenant. Verily! What is with Allah is better for you if you did but know." (V.16:95) And fulfil the Convenant of Allah (Baia: pledge for Islam) when you have convenanted, and break not the oaths after you have confirmed them - and indeed you have appointed Allah your surety..." (V.16:91)