Caitanya-caritāmṛta 4.174
ātma-sukha-duḥkhe gopīra nāhika vicāra kṛṣṇa-sukha-hetu ceṣṭā mano-vyavahāra
[aatma-sukha-duhkhe gopeera naahika vichaara krishna-sukha-hetu cheshtaa mano-vyavahaara]
Blended reading (Sanskrit + English inline)
ātma-sukha-duḥkhe gopīra nāhika vicāra kṛṣṇa-sukha-hetu ceṣṭā mano-vyavahāra
The gopīs do not care for their own pleasures or pains. All their physical and mental activities are directed toward offering enjoyment to Lord Kṛṣṇa.
My note
Source: vedabase.io