18:68
य इमं परमं गुह्यं मद्भक्तेष्वभिधास्यति ।
भक्तिं मयि परां कृत्वा मामेवैष्यत्यसंशयः ॥१८- ६८॥
ya imaM paramaM guhyaM madbhakteShwabhidhaasyati ।
bhaktiM mayi paraaM kRRitwaa maamewaiShyatyasaMshayaH ॥१८- ६८॥
Source: Automatic ITRANS Transliteration
Whoever presents this transcendent secret among my devotees,
Having done the highest devotion to Me, comes to Me without doubt.
Source: Milind S. Pandit
The one who shall propagate this supreme secret philosophy (or the transcendental knowledge of the Gita) amongst My devotees, shall be performing the highest devotional service to Me and shall certainly attain (or come to) Me.
For one who explains the supreme secret to the devotees, devotional service is guaranteed, and at the end he will come back to Me.
Source: Bhagavad Gita As It Is