Corbett JA (as he then was) amplified this well known rule in the
Plascon-Evans Paints case on page 634G - 635C in the following
words:
"This rule has been referred to several times by
the Court (see Burnkloof Caterers (Pty) Ltd v
Horseshoe Caterers (Green Point) (Pty) Ltd
1976(2) SA 930(A) at 938A-B; Tamarillo (Pty) Ltd
v B N Aitkin (Pty) Ltd 1982(1) SA 398(A) at 430-
1; Associated South African Bakeries (Pty) Ltd v
Oryx & Vereiniqte Backereien (Pty) Ltd en Andere
1982(3) SA 893(A) at 923G-924D) . It seems to me,
however, that this formulation of the general
rule, and particularly the second sentence
thereof requires some clarification and, perhaps,
qualification. It is correct, that wherein
proceedings on notice of motion disputes of fact
have arisen on the affidavits, a final order,
whether it be an interdict or some other form of
relief, may be granted if those facts averred in
the applicant's affidavits which have been
admitted by the respondent, together with the
facts alleged by the respondent, justify such an
order. The power of the Court to give such final
relief on the papers before it is, however, not
confined to such a situation. In
certain
instances the denial by respondent of a fact alleged by the
applicant may not be such as to raise a real, genuine or bona
fide dispute of fact (see in this regard Room Hire Co (Pty)
Ltd v Jeppe Street Mansions (Pty) Ltd 1949(3) SA 1155(T) at
1163-5; Da Mata v Otto NO 1972(3) SA 858(A) at 882D-H) . If
in such a case the respondent has not availed himself of his
right to apply for the deponents concerned to be called for
cross-examination under Rule 6(5)(g) of the Uniform Rules of
Court (cf Petersen v Cuthbert & Co Ltd 1945 AD 420 at 428;
Room Hire case supra at 1164) and the Court is satisfied as
to the inherent credibility of the applicant's factual
averment, it may proceed on the basis of the correctness
thereof and include this fact among those upon which it
determines whether the applicant is entitled to the final
relief which he seeks (see eg Rikhoto v East Rand
Administration Board and Another 1983(4) SA 278(W) at 283E-
H). Moreover, there may be exceptions to this general rule,
as, for example, where the allegations or
denials of the respondent are so far-fetched or
clearly untenable that the Court is justified in rejecting
them merely on the papers (see the remarks of Botha AJA in
the Associated South African Bakeries case, supra at 924A)."