Which preposition to use with otium

in Occurrences 2%

I wrote therefore, and busied myself in this playing labour, oliosaque diligentia ut vitarem torporum feriandi with Vectius in Macrobius, atque otium in utile verterem negatium.

of Occurrences 1%

Our skipper, Juma, affirmed that there was no water to speak of; but Juma probablynay, certainlyprefers the otium of a sojourn at Sopor to the toil of punting up the Pohru.

Which preposition to use with  otium