Abdullah bin Abbas reported,

When this verse was revealed, "And whether you disclose what is within yourselves or conceal it, Allah will call you to account for it" [Baqarah 2:284], something entered their hearts from it such as had never entered their hearts from anything before.So the Prophet ﷺ said, "Say, 'We have heard, we have obeyed, and we have submitted.'"Then Allah cast faith into their hearts, and Allah Most High revealed, "Allah does not burden any soul beyond its capacity. It shall have what it has earned, and it shall bear what it has brought upon itself. Our Lord, do not take us to task if we forget or fall into error" [Baqarah 2:286].He said, "I have done so.""Our Lord, do not lay upon us a burden like the one You laid upon those before us" [Baqarah 2:286].He said, "I have done so.""Our Lord, do not burden us with what we have no strength to bear. Pardon us, forgive us, and have mercy upon us. You are our Protector" [Baqarah 2:286].He said, "I have done so."

عن ابن عباس قال

لما نزلت هذه الآية: {وإن تبدوا ما في أنفسكم أو تخفوه يحاسبكم به الله} قال: دخل قلوبهم منها شيء لم يدخل قلوبهم من شيء، فقال النبي ﷺ: قولوا: سمعنا وأطعنا وسلمنا قال: فألقى الله الإيمان في قلوبهم، فأنزل الله تعالى: {لا يكلف الله نفسا إلا وسعها لها ما كسبت وعليها ما اكتسبت ربنا لا تؤاخذنا إن نسينا أو أخطأنا}، قال: قد فعلت، {ربنا ولا تحمل علينا إصرا كما حملته على الذين من قبلنا}، قال: قد فعلت، {ربنا ولا تحملنا ما لا طاقة لنا به واعف عنا واغفر لنا وارحمنا أنت مولنا} قال: قد فعلت.