Whilst the heavier troops moved down the Kabul valley to Pencelaotis (Charsadda) under Perdiccas and Hephaestion, Alexander with a body of lighter-armed troops and cavalry pushed up the valleys which join the Kabul from the north - through the regions now known as Bajour, Swat and Buner, inhabited by Indian hill peoples, as fierce then against the western intruder as their Pathan successors are against the British columns.
Meantime Perdiccas and Hephaestion had built a bridge over the Indus, and by this in the spring of 326 Alexander passed into the Punjab (at Ohind, 16 m.
At Ecbatana the death of Hephaestion for a time plunged Alexander into a passion of mourning.
There is more than one meaning of Hephaestion discussed in the 1911 Encyclopedia.
Of Telesilla's poems only two lines remain, quoted by the grammarian Hephaestion, apparently from a Parthenion, or song for a chorus of maidens.
Mention may also be made of a treatise on orthography, of which a fragment (on Quantity) has been preserved; a tract on prosody; commentaries on Hephaestion and Dionysius Thrax; and grammatical notes on the Psalms.