(69) باب الْفَضْلِ فِي قِرَاءَةِ { قُلْ هُوَ اللَّهُ أَحَدٌ }
It was narrated from Aishah that:
The Messenger of Allah (ﷺ) sent a man on a campaign, and he used to recite to his companions when leading them in prayer, and would conclude with 'Say: He is Allah, (the) One.' When they returned, they told the Messenger of Allah (ﷺ) about that. He said: "Ask them why he did that." So they asked him and he said: "Because it is a description of the Most Merciful, the Mighty and Sublime, and I love to recite it." The Messenger of Allah (ﷺ) said: "Tell him that Allah (SWT), the Mighty and Sublime, loves him."
Reference: Sunan an-Nasa'i 993
In-book reference: Book 11, Hadith 118
English translation: Vol. 2, Book 11, Hadith 994