Sunan al-Nasa'i — The Book of the Commencement of the Prayer

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.”

The Messenger of Allah said: “Whoever stands (in the voluntary night prayer of) Ramadan out of faith and in the hope of reward, his previous sins will be forgiven. And whoever spends the night of Lailat Al-Qadr in prayer out of faith and in the hope of reward, his previous sins will be forgiven.”

Ziyad, one who has white ears.

“The Messenger of Allah (ﷺ) said: ‘I start prayer and I want to make it long, but then I hear an infant crying, so I make my prayer short, because I know the distress caused to the mother by his crying.’”