Bhagavad Gita 5.10
He who dedicates his actions to the Spirit, without any personal attachment to them, is no more tainted by sin than the water lily is wetted by water.
ब्रह्मण्याधाय कर्माणि सङ्गं त्यक्त्वा करोति यः।
लिप्यते न स पापेन पद्मपत्रमिवाम्भसा॥brahmaṇyādhāya karmāṇi saṅgaṃ tyaktvā karoti yaḥ|
lipyate na sa pāpena padmapatramivāmbhasā||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).