In the following sutras up to [[6.1.157]] inclusive, the words saṃhitāyām 'in an unbroken flow of speech', should be supplied.,
This is an adhikara or governing sutra, exerting its influence upto 6.1.158. What ever we shall say in the sutras preceding that, must be understood to apply to words which are in संहिता, that is, which are pronounced together with an uninterrupted voice. Thus दध्यत्र, मध्वत्र the इ and उ are changed to य and व when the two words are pronounced without any hiatus. Otherwise we shall have दधि अत्र, मधु अत्र ॥,