“In the name of Allah, Most Kind, Most Merciful.
From Muhammad, Allah’s Messenger to Mu’az- Ibn-Jabal.
May the peace of Allah be on you.
l praise Allah before you,the One besides whom there is none worthy of worship.
After praising and glorifying Allah, (I say the following.) May Allah give you great reward and may He guide you to exercise patient endurance. And may He (also) guide us and you to be grateful to Him.
Surely, our souls, wealth and families are wonderful gifts from Allah. He has loaned them to us so that we may take benefit from them for a set period; and he takes them away after completion of that period.
Thus, gratitude becomes binding on us when He gives, and patience becomes obligatory when He takes away.
Your son was also from among the wonderful gifts (of Allah) and a loan (from Him). Allah enabled you to enjoy him in a way that was both enviable (to others) and pleasing (to you); and now, in return for great reward, mercy and forgiveness He has taken him away from you. Provided that you exercise patience. So do exercise patience and do not let your bewailing and complaining destroy your reward, for you will be sorry (if this happens).
Know that bewailing and complaining neither brings back anything nor does it repel grief and sorrow.
And whatever is to happen is set to happen. And it has occurred.
Peace be upon you.’
Tirmidhi, Quoted from Uswa-e-Rasool-e Akram sallalaho alehey wa sallaho wasalam, page 602