Sahih Muslim 86 a
Kitabu cha Imani
Clarifying that Shirk is the worst of sins, and the worst sins after Shirk
'Abdullah reported: I asked the Messenger of Allah (ﷺ): Which sin is the gravest in the eye of Allah? He (the Prophet) replied: That you associate a partner with Allah (despite the fact) that He has created you. He (the reporter) said: I told him (the, Prophet): Verily it is indeed grave. He (the reporter) said: I asked him what the next (gravest sin) was. He (the Prophet) replied: That you kill your child out of fear that he shall join you in food. He (the reporter) said: I asked (him) what the next (gravest sin) was. He (the Prophet) observed: Then (the next gravest sin) is that you commit adultery with the wife of your neighbour.
Tafsiri ya Kiswahili ya hadithi hii bado haipatikani — inaonyeshwa kwa Kiingereza.