Caynaanka hay - be steadfast in the path
This is very good.
In cameleering, the rope attached, or the halter of a camel is called 'Cayn' with emphasis upon the 'C' rather than the 'y', and in its contemporary usage, as in 'caynaanka hay', which literally means 'hang on to the rope', was popularised to describe leadership, wherein it denotes keep leading. Or as you suggested, stay steadfast.
Postscript:
If the emphasis is on the 'y', it is a
genus, popular in poetry as a type of a horse colour and pedigree wise, which then became the name of the famous well 'Cayn' *, (
there is a legend as to origin of the well), and later name of the city Caynaba, in the 'Cayn' region of Hawd & Reserve area (
originally at least).
Adjunct:
*As poet Cali Dhuux kicked off the famous Guba silsilah:
'Miduu caayo miduu caydhiyiyo mid uu carjaameeyo
Saddexdaa calaamu ka dhigay cuurkii Reer Dalale
Caqli mid aan lahayn baa tahee ha i caloolyeynin
Oo Cayn iyo Hartaad leedahye caraqa fuuqfuuqso'