Comparative evidence

2.deh₁

• OInd. dā-/di- ‘bind’ (MW: 474; Whitney 1885: 72)

Whitney 1885: 72: “Not recognized by native grammarians as separate from the preceding [root dā ‘divide, share’], and of somewhat doubtful character”.
Derivatives

• OInd. -dātŕ̥ ‘mowing’, ‘mower’ (MW: 474)

• OInd. -dā́na ‘cutting off’, ‘splitting’, ‘dividing’ (MW: 474)

• OInd. dā́man ‘string’, ‘cord’, ‘rope’ (MW: 475)

• OInd. -dāya ‘share’, ‘portion’ (MW: 474)

References

MW = Monier-Williams, M. 1899. A Sanskrit-English Dictionary. Clarendon Press.
Whitney 1885 = Whitney W. D. 1885. The roots, verb forms and primary Derivatives of the Sanskrit language. A supplement to his Sanskrit grammar. Leipzig.