"Shsiva has narrated eighty four asanas, out of which, I describe four most excellent ...

... ones. 23.
The four asanas are: siddha, padma, simha and bhadra.
Siddhasana is the best among these four, which one should always adopt. 24."
caturasityäsanäni sivena kathitäni tu II
tebhyascatuskamädäya särabhütam bravimyaham II 23 //
siddham padmam tathä simham bhadram ceti catustayam II
srestham taträpi ca tathä tisthetsiddhäsane sadä II 24 //
(Hatha Ratnavali 3-23.24)