Hadith.1558 - In a narration from Ibn Abi Umayr, from Al-Sadiq (as), He said: "Whoever prays two light (short) units of prayer (Rak'ahs), reciting 'Qul Huwa Allahu Ahad' (Surah Al-Ikhlas) sixty times in each Rak'ah, will finish the prayer without any sins remaining between him and Allah (swt), the Mighty and Exalted."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.