As a pure Vaishnav Devotee, we are putting a tilak on our head, But why lord himself putting Tilak on his forehead.? Is there any logic behind? any scriptures mentioned this logic?please share your idea. Thanks.
Krishna and Vishnu are taken as identical in many respects. What I found for Krishna has been mentioned in the wtitings of Vilva-mangala:
kasturi-tilakam lalAtafalake bakshas-sthale kausuvam. Meaning : Sri Krishna wears a tilaka of Kasturi on His forehead and Kaustubha-gem on His chest.
I did not find mention of gopi-chandana in this regard anywhere.
Sri Rama was a King and He is expected to wear the Raja-tilaka.But the dhyana-slokas I checked does not mention any.
Reference: Stavakusumanjali, Swami Gambhirananda (Ed.), Udbodhan