One verse

Srimad Bhagavatam 2.6.24

2.6.24

तेषु यज्ञस्य पशव: सवनस्पतय: कुशा: । इदं च देवयजनं कालश्चोरुगुणान्वित: ॥ २४ ॥

tesu yajnasya pasavah savanaspatayah kusah idam ca deva-yajanam kalas coru-gunanvitah

tesu
in such sacrifices
yajnasya
of the sacrificial performance
pasavah
the animals or the sacrificial ingredients
sa-vanaspatayah
along with flowers and leaves
kusah
the straw
idam
all these
ca
as also
deva-yajanam
the sacrificial altar
kalah
a suitable time
ca
as also
uru
great
guna-anvitah
qualified.

For performing sacrificial ceremonies, one requires sacrificial ingredients, such as flowers, leaves and straw, along with the sacrificial altar and a suitable time (spring).