Abu Hurairah (May Allah be pleased with him) reported:
I heard Messenger of Allah (ﷺ) saying, "Whosoever visits an ailing person or a brother of his to seek the Pleasure of Allah, an announcer (angel) calls out: 'May you be happy, may your walking be blessed, and may you be awarded a dignified position in Jannah".[At- Tirmidhi]. (DE)
Arabic/English book reference (DE): Book 1, Hadith 362 (DE)