Jami` at-Tirmidhi 3462

Ibn Mas`ud narrated that:The Messenger of Allah (ﷺ) said: “I met Ibrahim on the night of my ascent, so he said: ‘O Muhammad, recite Salam from me to your nation, and inform them that Paradise has pure soil and delicious water, and that it is a flat treeless plain, and that its seeds are: “Glory is to Allah (Subḥān Allāh) [and] all praise is due to Allah (Al-ḥamdulillāh) and ‘none has the right to be worshipped but Allah’ (Lā ilāha illallāh), and Allah is the greatest (Allāhu Akbar).”