Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:10:51 –

Then is it that when it has ˹actually˺ occurred you will believe in it? Now? And you were ˹once˺ for it impatient  

Is it ˹only˺ then, when it has come to pass, ˹when˺ it has befallen you, that you will believe therein?, that is, in God, or ˹it means˺ in the chastisement, when it has come down (the ˹use of˺ hamza ˹in a-thumma, ‘is it then’˺ is to deny ˹the possibility of˺ deferrment ˹of chastisement˺, in other words, it ˹your belief˺ will not be accepted from you ˹in that instance˺ and it will be said to you: Now, do you believe, when ˹until now˺ you have been hastening it on?’, in mockery ˹of it˺.
القرآن:١٠:٥١ –

أَثُمَّ إِذَا مَا وَقَعَ آمَنْتُمْ بِهِ ۚ آلْآنَ وَقَدْ كُنْتُمْ بِهِ تَسْتَعْجِلُونَ  

{أثُمَّ إذا ما وقع} حل بكم {آمنتم به} أي الله أو العذاب عند نزوله، والهمزة لإنكار التأخير فلا يقبل منكم ويقال لكم {آلآن} تؤمنون {وقد كنتم به تستعجلون} استهزاء.