CC Madhya 15.114

kibā raghunandana — pitā, tumi — tāra tanaya?
niścaya kariyā kaha, yāuka saṁśaya’
Word for word: 
kibā — or; raghunandana — Raghunandana; pitā — father; tumi — you; tāra — his; tanaya — son; niścaya kariyā — making certain; kaha — just speak; yāuka saṁśaya — let My doubts be dissipated.
Translation: 
“Or is Śrīla Raghunandana your father and you are his son? Please let Me know the facts so that My doubts will go away.”