Answer

In the Bhagavati Vyakhyaprajnapti Sutra, this line is in Chapter 1, Śataka 1, Uddeshaka 3, Sutras 133–135. The exact question begins at Sutra 133: “अत्थित्तं अत्थित्ते परिणमइ, नत्थित्तं नत्थित्ते परिणमइ ?” In the Jain Quantum edition, it appears on page 120. ( jainqq.org)

Explanation

So if you are looking for the exact place in Chapter 1, it is not a separate isolated sutra; it is part of the Asti-Nasti Pad discussion in the third uddeshaka, and the dialogue continues through Sutras 133, 134, and 135. ( jainqq.org)

Takeaway

The easiest way to locate it is: Bhagavati Sutra → Chapter 1 → Śataka 1 → Uddeshaka 3 → Sutra 133. ( jainqq.org)