When Moghuls invaded Bharat desa, a daughter of moghul emperor took the utsava vigraha of Thriunarayana perumal [Melkot in Karnataka] and was playing with that utsava vigraha. On seeing this Ramanujacharya told the moghul emperor to give back the vigraha. Sarcastically the moghul told that you call your God. If he comes alongwith you take the vigraha. Ramanuja sang Chellapillai come along with me; Immediately the vigraha followed Ramanuja. All got astonished. Does this have any referral in puranas? If so in which purana?
As much as I know, there is no referral of the Chellapillai incident in the Puranas. This is because Ananthazhwan (Ananta Sesha) had taken Avatharam as Ramanuja much much longer after the Puranas had been written by Vyasa. To be precise, in 1017 AD.