Shurahbil bin Muslim Al-Khawlani said:
I heard Abu Umamah Al-Bahil say: "I heard the Messenger of Allah(ﷺ) say: "The guarantor is responsible and the debt must be repaid.' " (RU)
English reference (RU): Vol. 3, Book 15, Hadith 2405 (RU)
Arabic reference (RU): Book 15, Hadith 2497 (RU)