your best first try is this essay
When Do the Jhānas Become Necessary?
While there seem to be no suttas that impose an inflexible rule to the
effect that a lay noble disciple must possess the jhānas, there are at
least two texts that explicitly ascribe all four jhānas to certain
householders. One, found in the Citta-saṃyutta (SN 41:9/IV 300-2),
features Citta the householder, the foremost lay preacher, in a
conversation with a naked ascetic named Kassapa. Kassapa was an old
friend of Citta who had embraced the life of renunciation thirty years
earlier, and this is apparently their first meeting since that time.
Kassapa confesses to Citta that in all these years he has not achieved
any "superhuman distinction in knowledge and vision befitting the
noble ones" (uttarimanussadhammā alamariya-ñāṇadassanavisesa); all he
does is go about naked, with a shaved head, using a feather brush to
sweep his seat. He then asks Citta whether, as a lay disciple of the
Buddha, he has reached any distinguished attainments. Citta says that
he has, and then declares his ability to enter and dwell in the four
jhānas (he uses the standard formula). To this he adds: "Further, if I
were to die before the Blessed One, it would not be surprising if the
Blessed One would declare of me: 'There is no fetter bound by which
Citta the householder might come back to this world.'" Through
this bit of coded text, partly a stock formulation, Citta is informing
his friend that he is a non-returner with access to the four jhānas.
The other sutta is AN 7:50/IV 66-67 and concerns the lay woman
Nandamātā. In the presence of the Venerable Sāriputta and other monks,
Nandamātā has been disclosing the seven wonderful and marvellous
qualities with which she is endowed. The sixth of these is possession
of the four jhānas, again described by the stock formula. The seventh
is as follows: "As to the five lower fetters taught by the the Blessed
One, I do not see among them any as yet unabandoned in myself."
This too is a coded way of declaring her status as a non-returner.