Srimad-Bhagavatam: Canto 7 - Chapter 1 - Verse 34

Sanskrit:

श्रीयुधिष्ठिर उवाचकीद‍ृश: कस्य वा शापो हरिदासाभिमर्शन: ।अश्रद्धेय इवाभाति हरेरेकान्तिनां भव: ॥ ३४ ॥

ITRANS:

śrī-yudhiṣṭhira uvācakīdṛśaḥ kasya vā śāpohari-dāsābhimarśanaḥaśraddheya ivābhātiharer ekāntināṁ bhavaḥ

Translation:

Mahārāja Yudhiṣṭhira inquired: What kind of great curse could affect even liberated viṣṇu-bhaktas, and what sort of person could curse even the Lord’s associates? For unflinching devotees of the Lord to fall again to this material world is impossible. I cannot believe this.

Purport:

In Bhagavad-gītā (8.16) the Lord clearly states, mām upetya tu kaunteya punar janma na vidyate: one who is purified of material contamination and returns home, back to Godhead, does not return to this material world. Elsewhere in Bhagavad-gītā (4.9) Kṛṣṇa says: “One who knows the transcendental nature of My appearance and activities does not, upon leaving the body, take his birth again in this material world, but attains My eternal abode, O Arjuna.” Mahārāja Yudhiṣṭhira, therefore, was surprised that a pure devotee could return to this material world. This is certainly a very important question.