Musnad Ahmad 32:1365

Abdullah ibn al-Harith narrated to us, he said: Salamah ibn Wardan narrated to me, that Anas ibn Malik, the companion of the Prophet, may Allah bless him and grant him peace, narrated to him, that the Messenger of Allah, may Allah bless him and grant him peace, asked a man from his companions and said: "O so-and-so, have you married?" He said: "No, and I do not have what I can marry with." He said: "Do you not have 'Say, He is Allah, [who is] One'?" He said: "Yes." He said: "A quarter of the Quran." He said: "Do you not have 'Say, O disbelievers'?" He said: "Yes." He said: "A quarter of the Quran." He said: "Do you not have 'When the earth is shaken'?" He said: "Yes." He said: "A quarter of the Quran." He said: "Do you not have 'When the victory of Allah has come'?" He said: "Yes." He said: "A quarter of the Quran." He said: "Do you not have the Verse of the Throne, 'Allah - there is no deity except Him'?" He said: "Yes." He said: "A quarter of the Quran." He said: "Marry, marry, marry."