Shiva Purana
असमक्षं समक्षं वा तस्य कार्यं समाचरेत् ॥ इत्थमाचारवान्भक्तो नित्यमुद्युक्तमानसः ॥ ३४ ॥
Whether he is not present or not, he should perform his duties. Thus conducted by the devotee he always remained steadfast in mind.
english translation
asamakSaM samakSaM vA tasya kAryaM samAcaret ॥ itthamAcAravAnbhakto nityamudyuktamAnasaH ॥ 34 ॥
hk transliteration by Sanscript