Simple downstrokes chords were added to the solo to add to the context. You can find Raga Chords and Rhythm Guitar resources at Ragacourses.com
Finding chords for the song from the melody notes is explained in these two videos
A R Rahman Chords used in Puthu Vellai Mazhai (Yeh Haseen)
In the first video, we will go through the process of finding chords for Puthu Vellai Mazhai (yeh haseen) on our own, from the melody notes of the song.
The second video shows you the note to chord relationship that is the basis for finding chords for songs or ragas.
Swaras Notes, how to on Guitar (singers can use too)
Swaras for each move of the ARRahman song Puthu Vellai Mazhai has been written and shown on the guitar. The swaras have been written clearly with rules avoiding ambiguity, that will help you play them without doubt.