āśīr-vacana-saṁyuktā stutir yasmāt prayujyate deva-dvija-nṛ-pādīnāṁ tasmān nāndīti saṁjñitā

asir-vacana-samyukta
stutir yasmat prayujyate
deva-dvija-nr-padinam
tasman nanditi samjnita

The introductory portion of a drama, which is written to invoke good fortune, is called nandi-sloka.