Comparative evidence

h₁lengʰ, h₁lenǵʰ

• Hitt. link- 'swear', 'take an oath' (EDHIL: 526ff.). Alternatively, Puhvel (HED 5: 85ff.) connects the Hittite verb to Lat. ligāre, PIE *leiǵ- 'bind'.

References

EDHIL = Kloekhorst, A. 2008. Etymological Dictionary of the Hittite Inherited Lexicon. Brill.
HED = Puhvel, J. 1984 - . Hittite Etymological Dictionary. Mouton.