Dīkṣā-bhedaḥ (Types of Initiation) — Lalitopākhyāna: Hayagrīva–Agastya Dialogue
नित्यार्चनं दिवा कुर्याद्रात्रौ नैमित्तिकार्चनम् / उभयोः काम्यकर्मा स्यादिति शास्त्रस्य निश्चयः
nityārcanaṃ divā kuryādrātrau naimittikārcanam / ubhayoḥ kāmyakarmā syāditi śāstrasya niścayaḥ
By day one should perform nityārcana, the daily worship; by night, naimittikārcana, worship done on special occasions. If one does both with desire for reward, it becomes kāmya-karma; such is the śāstra’s settled conclusion.