Musnad Ahmad 1018:38

Yazid narrated to us, Hammad ibn Salamah informed us, from ‘Asim ibn Abi al-Najud, from Jurayy, who said: Two men from Banu Sulaym, from the companions of the Prophet (may Allah bless him and grant him peace), met. One of them said to his companion: I heard the Prophet (may Allah bless him and grant him peace) say: "Subhan Allah (Glory be to Allah) is half of the scale, and Al-Hamdulillah (Praise be to Allah) fills it, and Allahu Akbar (Allah is the Greatest) fills what is between the heaven and the earth. Fasting is half of patience, and Wudu (ablution) is half of faith."