Muhammad bin Jahada محمد بن جحادة · The Book of the Sunnah

Abdullah bin Mughaffal was sitting beside a nephew of his, the nephew hurled a pebble and he told him not to do that, and he said: "The Messenger of Allah (ﷺ) had forbidden that. He (the Prophet) said: 'It cannot be used for hunting and it cannot harm an enemy, but it may break a tooth or put an eye out." He said." His nephew hurled another pebble and he ("Abdullah bin Mughaffal) said: 'I tell you that the Messenger…

"The Messenger of Allah (ﷺ) said: 'By the One in whose Hand is my soul! You will not enter Paradise until you believe, and you will not (truly) believe until you love one another. Shall I not tell you of something which, if you do it, you will love one another? Spread the greetings of Salam amongst yourselves.'"