The scriptural basis for the translation of bhakti as ‘devotional service’ instead of ‘devotion’

bhaj ity eṣa vai dhatuḥ       sevayaṁ parikirtitaḥ 

tasmat seva budhaiḥ prokta      bhaktiḥ sadhana-bhuyasi

“Bhaj as a root is used to convey ‘service.’ Therefore, the wise explain that engaging in the Lord’s service is the way of bhakti.”

Garuda Purana  (Purva-khanda 231.3)