Shiva Purana
अमुमेव समाराध्य विष्णुर्मोक्षप्रदोऽभवत्॥ ब्रह्मा विष्णुश्च रुद्रश्च स्रष्टृपालकहारकाः ॥ ८२॥
It is by propitiating Him that Viṣṇu acquired the art of bestowing salvation; and Brahmā, Viṣṇu and Rudra became the creator, sustainer and the annihilates respectively.
english translation
amumeva samArAdhya viSNurmokSaprado'bhavat॥ brahmA viSNuzca rudrazca sraSTRpAlakahArakAH ॥ 82॥
hk transliteration by Sanscript