Abu Hurairah (May Allah be pleased with him) said:
The Messenger of Allah (ﷺ) said, "Almighty Allah says, 'I am the One Who is most free from want of partners. He who does a thing for the sake of someone else beside Me, I discard him and his polytheism.."[Muslim]. (IT)
App reference (IT): Book 18, Hadith 106 (IT)
Arabic/English book reference (IT): Book 18, Hadith 1616 (IT)