śacīra - of Śacīmātā; ānanda bāḍe - pleasure increases; dekhi' - seeing; putra-mukha - the face of her son; bhojana karāñā - feeding; pūrṇa - full; kaila - made; nija-sukha - her own happiness.

As mother Śacī constantly saw the face of her son and fed Him, her own happiness increased and was indeed complete.