Shiva Purana
सांगा ऽनंगा च या सेवा सा भक्तिरिति कथ्यते ॥ सा पुनर्भिद्यते त्रेधा मनोवाक्कायसाधनैः ॥ ३४ ॥
Service with or without the ancillaries is called devotion. It is threefold due to the three means of mind speech and body.
english translation
sAMgA 'naMgA ca yA sevA sA bhaktiriti kathyate ॥ sA punarbhidyate tredhA manovAkkAyasAdhanaiH ॥ 34 ॥
hk transliteration by Sanscript