एकाद् धो द्यमुञ् अन्यतरस्याम्

Thus एकधा राशिं कुरु or ऐकध्यं कुरु, एकधा भुङ्क्ते or ऐकध्यं भुङ्क्ते ॥ The repetition of धा in the sutra shows that the substitution takes place when the sense is that of विधा, as well as when it is that of अधिकरण विचाल ॥ Had धा not been repeated, the substitution would have come in the sense of अधिकरण विचाल only, as immediately preceding this sutra.,