no limit just a declaration from directors that they have not given loan out of borrowed funds and pass a resolution under section 189 read with section 179.
If it is a public company, you have to comply with Sec.180(1)(c) for limit on borrowing. Further, loan from relatives of directors can be taken in case of private company [Ref.Rule 2(1)(c)(viii) of Deposit Rules].
take declaration from directors that they have not given loan out of borrowed funds, pass board resolutions and file MGT-14 of Board resolution as per section 179(3) and if loan amount exceeds paid up capital+free reserves+ security premium account then also pass special resolution and file MGT -14 of special resolution as per section 180 (1) (c) of companies act 2013
yes in case of private company there is no need to pass special resolution hence filing of mgt-14 of special resolution is not applicable but we have to file MGT-14 of board resolution as per section 179(3)