Surah Ali 'Imran — Ayah 159 (3:159)
فَبِمَا رَحۡمَةٖ مِّنَ ٱللَّهِ لِنتَ لَهُمۡۖ وَلَوۡ كُنتَ فَظًّا غَلِيظَ ٱلۡقَلۡبِ لَٱنفَضُّواْ مِنۡ حَوۡلِكَۖ فَٱعۡفُ عَنۡهُمۡ وَٱسۡتَغۡفِرۡ لَهُمۡ وَشَاوِرۡهُمۡ فِي ٱلۡأَمۡرِۖ فَإِذَا عَزَمۡتَ فَتَوَكَّلۡ عَلَى ٱللَّهِۚ إِنَّ ٱللَّهَ يُحِبُّ ٱلۡمُتَوَكِّلِينَ ١٥٩
English translation (Saheeh International)
So by mercy from Allāh, [O Muḥammad], you were lenient with them. And if you had been rude [in speech] and harsh in heart, they would have disbanded from about you. So pardon them and ask forgiveness for them and consult them in the matter. And when you have decided, then rely upon Allāh. Indeed, Allāh loves those who rely [upon Him].
Brief commentary
Due to Allah’s great mercy, your character, O Prophet, was made to be gentle with your Companions. If you were harsh in your words and actions and hard-hearted, they would have left you. So, pardon them their shortcomings with you and ask Allah to forgive them for what is between them and Allah; and ask their opinion in whatever needs to be agreed upon. Then if you decide on something after agreeing together, then go ahead with it, and trust in Allah. Allah loves those who trust in Him, giving them success and support.